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HomeMy WebLinkAboutComments PWE 6/15/2006 " , .' " ~~ ~ ,,' Memorandum City of Springfield Subject: June 15th, 2006 ~\lE1::> T"'....e: z.o, "Zeob Andy Limbird, Urban Planner Malt Stouder, EIT, Civil Engineer-in-Training DRC2006-00033,Springfield Justice Center Date: To: From: J have reviewed the materials provided with the subject application. The recommended findings and conditions outlined below are provided for your use in preparing the land-use decision. SA-NIT ARY SEWER Finding: Section 32. 1 00 of the SDC requires that sanitary sewers shall be installed to -/ serve each new development and to connect developments to existing mains. Additionally, installation of sanitary sewers shall provide sufficient access for maintenance activities. Finding: The applicant has proposed relocating the existing 12 inch public sewer located I in the alley way to A Street as shown on the plans. The relocated sewer in A Street' would. then run west to Pioneer Parkway East, where it would turn north in Pioneer Parkway East' and connect to an existing manhole located. at B Street. Finding: Pioneer Parkway Easl'is right-of-way controlled'by the Oregon Department of '/'Transportation (ODOT). Construction of a new public sewer in ODOT right-of-way will require a facilities permit from ODOT. Finding: The existing sewer line located within the alley way provides sewer service to , vtax lots 2700, 2800 and 2900, The applicant's proposal to replace this line'in A Street does not include provisions to ensure sewer service will continue to these tax lots. ~,,-! Condition: Prior to approvaI' of the construction plan drawings, the applicant shall obtain approval from ODOT to construct a new public sanitary sewer line in Pioneer Parkway, East as shown on the 'plan drawings,' " ~,'5 Condition: Prior to approval ofthe construction plan drawings, the applicant shall provide on the plans, sewer service laterals to existing tax lots 2700, 2800 and 2900, to replace \hese lot'sexisting sewer service. / , STORMW ATER MANAGEMENT Finding.: Section 32,110 (2) of the SDCrequires ihat the Approval 'Authority shall grant development approval only where adequate public and/or private stormwater managel;nent systems provisions have been made as determined l:>Y thc Public Works Director, consistent with the Engineering Design Standards and Procedures Manual (EDSPM). Date Received' Planner: AL, ~ /.ld !;.,1?6 / -f' .) : -' " Finding: Section 32.110 (4) of the SDC requires that run-off from a development shall be v' directed to an approved stOlmwater management system with sufficient capacity to accept the discharge, Finding: To comply with Sections 32,110 (4) &(5), stonilwater runoff from the rooftop ./ of the building will be directed into the existing storm water systems located in 4th Street . -. ' and Pioneer Parkway East, while runoff from the Courtyard area will be directed into a vegetated filtration basin. . \ J Finding: The applicant proposes connection of two 'roof drainage pipes to the existihg,12 inch public stonn sewer system in Pioneer Parkway East Pioneer Parkway East is right- of-way controlled by the Oregon Department of Transportation (ODOT),' Connection to the existing public system in ODOT right"of-way will require a facilities pennit from ODOT." ' , Cc..,j, Ie Condition: Prior to approval of the building plan drawings, the applicant shall obtain approval from ODOT to construct stonn sewer laterals in Pioneer Parkway East as shown on the plan drawings, or shall re-locate the stonn lines to a location outside ofODOT right-of-way. WATER OUALITY Finding: Under Federal regulation of the Clean Water Act (CW A), Endangered Species ) Act (ESA), and National Pollutant Discharge Elimination System (NPDES), the City of Springfield is required to obtain, and has applied for, a Municipal Separate Storm Sewer System (MS4) permit. A provision of this pennit requires the City demonstrate efforts to reduce the pollution in urban stonnwater to the Maximum Extent Practicable (MEP). Finding: Federal and Oregon Department of Environmental Quality (ODEQ) rules j require the City's MS4 plan address six "Minimum Control Measures." Minimum Control Measure 5, "Post,Construction Stonnwater Management for New Development and Redevelopment,': applies to the proposed development. Finding: Minimum Control Measure 5 requires the City of Springfield to 'develop, implement and enforce a program to ensure the reduction of pollutants in stonnwater I runoff to the MEP. The City must also develop and implement strategies that include a combination of structural or non-structural Best Management Practices (BMPs) appropriated for the co'mrilUnity. \ Finding: Minimum Control Measure 5 requires the City of Springfield use an ordinance J or other regulatory mechanism to address post construction runoff from new and re- development projects to the extent allowable under State law. Regulatory mechanisms used by the City include the Springfield Development Code (SDC), the City's Engineering Design Standards and Procedures Manual (EDSPM) ard the future Storm water Facilities Master Plan (SFMP). --..., Date Received: ~~I)Ot?' Planner: AL " .' ..<.... , .{ Finding.'As required in Section 31.050 (5) of the SDC, "a development shal! be required to employ d~ainage management practices approved by the Public Works Director and ,/ consistent with Metro Plan policies and theE}Jgineering Design Standards and Procedures Manual." Finding: Section 3,02 of the City's EDSPM states the Pubic Works Department will /accept, as interim desigl) standards for stonnwater quality, water quality facilities desi!,'11ed pursuant'to the policies and procedures of either the City of Portland (BES), or the Clean Water Services (CWS). , ' Finding: Section 3.03.3,8 ofthe'City's EDSPM states allpubliC and private development " and redevelopment projects ,shall ,employ a system of one or more post-developed BMPs / that in combination are designed to achieve at least a 70 percent reduction in the total suspended solids in the runoff generated by that development. Section 3.03.4.E of the manual requires a minimum of 50 percent of the non-building rooftop'impervious area on , a site shall be treated, for stormwater quality improvement using vegetative methods, ' . . . \ . Finding: To meet the requirements of the City's MS4 permit, the Springfield Development Code, and the City's EDSPM, the applicant has proposed one'small vegetated filtration basin to treat stonn runoff from the Sally Port/Courtyard area. A ./ small perforation pipe will convey runoff from the filtration basin to the existing 15 inch, stonn line in 4th Street: ' PUBLIC STREETS. SIDEWALKS & IMPROVEMENT ARGEEMENTS , UTILITIES. EASEMENTS AND RIGHTS OF WAY OTHER PERMITS / .' _ ":,,,v""~ed:*/)OPb Planner: AL '